Sithisarn Pongtip, Muensaen Sarinthip, Jarikasem Siripen
Pharmaceutical and Natural Products Department, Thailand Institute of Scientific and Technological Research, Pathum Thani, Thailand.
Nat Prod Commun. 2011 Sep;6(9):1289-91.
Extracts from the leaves of Acanthopanax trifoliatus, harvested at different seasons, were quantitatively analyzed for phenolic contents using high performance liquid chromatographic (HPLC) methods. Samples collected in winter contained high amounts of the major active components, mono and di-caffeoylquinic acid derivatives and flavonoid glycosides. It was found that January and November were the preferred periods for collecting plant material containing high amounts of caffeoyl quinic acid and flavonoid constituents.
采用高效液相色谱（HPLC）法对不同季节采收的三叶五加叶提取物中的酚类成分进行了定量分析。冬季采集的样品中含有大量主要活性成分，即单咖啡酰奎尼酸衍生物和黄酮苷。研究发现，1月和11月是采集含有大量咖啡酰奎尼酸和黄酮成分植物材料的最佳时期。
